From 982acb97560c8118c2109504a22b0d78a580547d Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 8 Feb 2017 11:16:39 +0100 Subject: ipv4: fib: Notify about nexthop status changes When a multipath route is hit the kernel doesn't consider nexthops that are DEAD or LINKDOWN when IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN is set. Devices that offload multipath routes need to be made aware of nexthop status changes. Otherwise, the device will keep forwarding packets to non-functional nexthops. Add the FIB_EVENT_NH_{ADD,DEL} events to the fib notification chain, which notify capable devices when they should add or delete a nexthop from their tables. Cc: Roopa Prabhu Cc: David Ahern Cc: Andy Gospodarek Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Reviewed-by: Andy Gospodarek Signed-off-by: David S. Miller --- include/net/ip_fib.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include') diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index 57c2a863d0b2..45a184eaff2b 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -214,11 +214,18 @@ struct fib_entry_notifier_info { u32 nlflags; }; +struct fib_nh_notifier_info { + struct fib_notifier_info info; /* must be first */ + struct fib_nh *fib_nh; +}; + enum fib_event_type { FIB_EVENT_ENTRY_ADD, FIB_EVENT_ENTRY_DEL, FIB_EVENT_RULE_ADD, FIB_EVENT_RULE_DEL, + FIB_EVENT_NH_ADD, + FIB_EVENT_NH_DEL, }; int register_fib_notifier(struct notifier_block *nb, -- cgit v1.2.3